Intel Xeon E5 2670 v2 's Advantages
Released 2 years and 5 months late
Higher base frequency (2.5GHz vs 2.4GHz)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (115W vs 130W)
Intel Xeon E7 8870 's Advantages
Larger L3 cache size (30MB vs 25MB)